BMI Calculator
Calculate your Body Mass Index using metric or imperial units.
Your file never leaves this browser tab — everything runs locally on your device.
How to use bmi calculator
- Choose metric (kg, cm) or imperial (lb, in) units.
- Enter your weight and height.
- Read your BMI value and category (underweight, normal, overweight, obese).
Common use cases
- Getting a quick general sense of whether your weight is in a typical healthy range.
- Tracking BMI changes over time alongside a fitness or health goal.
- Converting between metric and imperial units while checking BMI.
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